Washington, DC – The National Park Service will need to start phasing out snowmobiles from Yellowstone and Grand Teton national parks. Tuesday, a federal judge refused to suspend his ruling that struck down a Bush Administration plan to allow snowmobiling to continue. Washington DC District Judge Emmet Sullivan reinstated a Clinton Administration plan that will ban the machines starting next winter. Snowmobiling is still allowed this year, but with restrictions that the state of Wyoming says will seriously hurt the local tourism industry. So, the state and snowmobile groups wanted Judge Sullivan to stay his ruling and allow the Bush Administration plan to be in effect this winter. But the judge rejected that request, writing that claims his ruling would cause chaos in the parks are disingenuous at best. The state of Wyoming is appealing last week's ruling to the US Court of Appeals for the District of Columbia.